Tian Di Science & Technology Co., Ltd is principally engaged in the manufacture and distribution of mine automation and mechanical equipment. The Company operates its businesses through manufacture and distribution of mine automation and mechanical equipment, manufacture and distribution of coal preparation equipment, mine production technology services and operation, construction of underground special engineering projects, as well as distribution of coal products. The Company operates its businesses primarily in domestic market. As of December 31, 2010, the Company had 19 subsidiaries, which involved in engineering construction, technology consulting, project investment, as well as the manufacture and distribution of mining machines, electronic equipment and other products.